Secretary's Department file on disposal of closed colliery sites and spoil heaps in the North Derbyshire Area Including on Holmewood, March-May 1972, Westthorpe, May 1972-Dec 1974, Old Norwood, May 1972, Blackwell 'B' Winning, Sep 1972-Jun 1973, Swanwick, Sep 1972, 'A' Winning, Oct 1972-March 1974 (also including copy of special report, Aug 1968), Clay Cross No. 2, Jan 1973, Wincobank, Jan-June 1973, Holbrook, Feb 1973, Britain, Feb-March 1973, Denby Hall, March 1973-Oct 1976 , Kilburn, March 1973, Hartshay, May 1973, Ormonde, May 1973, Ramcroft, June 1973, Williamthorpe, Jan 1974-Aug 1975, Grassmoor, Jan 1974, Hornthorpe, May-Aug 1974, Glapwell, Aug 1974-Apr 1977, Langwith, Dec 1974, Renishaw Park, Dec 1974-Sep 1976, Oxcroft, Jun 1976-Apr 1977, Morton Apr 1975-March 1977 (Including spoil heap plans), Denby New Winnings, Feb 1977, Morton, Aug 1975-Jan 1977, Langwith, Sep 1976, Calow, Nov 1975-Sep 1976, and on disposal of several sites and tips to Derbyshire County Council, May 1975-Sep 1976 Mar 1972-Apr 1977